It is not true that six people can not take metronidazole. According to the instructions of the drug, it should be contraindicated in patients with the presence of blood disorders and active central nervous system diseases. Indications: this drug is mainly used for the treatment of intestinal as well as extraintestinal amebiasis. It is also effective in pouch worm disease, vaginal trichomoniasis, and guinea worm infections. It is also now widely used for anaerobic infections. ADVERSE REACTIONS:Adverse reactions to this drug are mainly gastrointestinal discomfort reactions such as vomiting, nausea, abdominal cramps, and loss of appetite. Some patients may also experience vertigo, headache, and ataxia. A few patients may experience urticaria, cystitis, and dysuria. For patients who need to apply this drug, it is important to follow the doctor’s instructions for application.